题目内容
| 计算下面各题。(能简算的要简算) | ||||
|
| (1)72.5÷0.5÷20 =72.5÷(0.5×20) =72.5÷10 =7.25 |
(2)4.28×0.4+4.28×1.6 =4.28×(0.4+1.6) =4.28×2 =8.56 |
|
(3)9.2+7.6+10.5 |
(4)1.25×7×0.8×2 =1.25×0.8×7×2 =1×7×2 =14 |
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题目内容
| 计算下面各题。(能简算的要简算) | ||||
|
| (1)72.5÷0.5÷20 =72.5÷(0.5×20) =72.5÷10 =7.25 |
(2)4.28×0.4+4.28×1.6 =4.28×(0.4+1.6) =4.28×2 =8.56 |
|
(3)9.2+7.6+10.5 |
(4)1.25×7×0.8×2 =1.25×0.8×7×2 =1×7×2 =14 |